Drop support for Python < 3.9.2

[alexmojaki]

Moving towards dropping 3.9 entirely in #1919

[cloudflare-workers-and-pages]

Deploying logfire-docs with    Cloudflare Pages

Latest commit:	536d947
Status:	✅  Deploy successful!
Preview URL:	https://11e0ea54.logfire-docs.pages.dev
Branch Preview URL:	https://codex-py39-compatible-cleanu.logfire-docs.pages.dev

View logs

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 1 additional finding.

[cubic-dev-ai]

1 issue found across 2 files (changes from recent commits).

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="pyproject.toml">

<violation number="1" location="pyproject.toml:9">
P2: This change narrows supported Python versions to 3.9.2+ and may unintentionally block users on Python 3.9.0/3.9.1. If the goal is still general Python 3.9 support, keep the floor at `>=3.9`.</violation>
</file>

_{Tip: Review your code locally with the cubic CLI to iterate faster.}

[alexmojaki]

(AI) Intentional. Python 3.9.0/3.9.1 have a broken collections.abc.Callable generic implementation that can fail in runtime typing contexts and also reports misleading line events for this branch. This PR keeps Python 3.9 support but makes the declared floor >=3.9.2, where that behavior is fixed.